0 the shape of a bone, a shell, or a plant or animal that has been preserved in rock for a very long period -- 化石
1 an old person, especially one who will not accept new ideas -- 老人；（尤指）老頑固，思想僵化的人，老古董
Chitinozoans and a few graptolites were found in the unit, but no other fossils.
However, their exact stratigraphic relation to the trace fossils is not clear.
In this chapter typical examples of the kinds of fossils most commonly encountered are illustrated by beautiful specimens.
At the opposite end of the scale from the phylum is the smallest unit of classification usually used for fossils: the species.
The small, lentil-shaped fossils are a separate form of the same species.
Most bivalve fossils are a few centimetres long; the ideal size for collecting.
Here, no vertebrates at all could be found, the fossils consisting only of invertebrates such as the trilobites.
However, this technique only provides an external morphological description of putative fossilized cells and is incapable of distinguishing between abiotic fossils of similar morphologies.
